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Table 3 Ranges and mean values of each axis in each test (mean ± standard deviation and [confidence interval])

From: Reliability of accelerometric assessment of balance in children aged 6–12 years

VariableOLCEOLOEDOLNG
Vertical axisMaximum55.6 ± 11[50.3–61.1]42.1 ± 6.9[39.5–43.8]63.2 ± 14.3[60.8–67.3]79.2 ± 15.1[72.4–81.1]
 Minimum0 ± 0[0–0]0 ± 0[0–0]0 ± 0[0–0]0 ± 0[0–0]
 Mean7.5 ± 2.6[5.2–9.8]3.7 ± 1.4[2.3–5.2]8.6 ± 1.4[5.6–11.6]37.8 ± 0.8[34.6–40.9]
Sagittal axisMaximum52.8 ± 11.4[50.7–57.3]47.7 ± 8.6[44.3–51.7]71.5 ± 13.4[68.4–73.7]40.8 ± 8.4[37.6–43.9]
 Minimum1 ± 0.9[0.2–1.7]0.1 ± 0.1[0–0.5]0.1 ± 0.1[0.1–0.7]2 ± 0.6[0.8–3.5]
 Mean12.4 ± 4.4[10.1–14.8]6.7 ± 3.4[4.8–8.5]11.7 ± 2.6[8.9–14.5]20.3[18.6–22.1]
Perpendicular axisMaximum52.5 ± 9[48.7–55.5]35 ± 6.8[33.5–41.4]67 ± 11[61.7–70.3]50.9 ± 8.5[47.7–53.3]
Minimum3.7 ± 2.1[1.1–5]0.1 ± 0.1[0–0.2]0.3 ± 0.2[0–0.8]4 ± 3.2[3–5.2]
 Mean19.5 ± 8.1[16.1–19.9]5 ± 2.6[3.6–6.4]8.2 ± 2.5[5.9–10.5]29.6 ± 5.1[27.9–31.4]
Root Mean SquareMaximum92.3 ± 19.5[91.2–94.7]70.6 ± 14.4[66.8–73.9]109.2 ± 23.9[92.8–115.7]96.5 ± 16.6[88.5–101.2]
Minimum2.2 ± 2.5[0.8–3.7]0.2 ± 0.1[0–0.5]0.4 ± 0.2[0–0.8]5.9 ± 3[4.2–6.8]
Mean19.5 ± 9.3[15.5–23.6]10.9 ± 6.6[7.9–13.9]19.7 ± 8.7[14.7–24.7]56.5 ± 11.1[53–60]
  1. OLCE One leg with eyes closed, OLOE one leg with eyes open, DOL dynamic equilibrium in one leg, NG normal gait